network: add metering api operations

This patch aims to bring new tests related to Neutron Metering plugin.

They cover:
- List / Create / Show / Delete metering labels
- List / Create / Show / Delete metering label rules

Note: Update operation is not covered by the API.
Also add basic operations in network admin client.

Change-Id: Ieaf9a5dcd52f54e015e7565f50a3ea81569c483a
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index b129786..0f73aca 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -75,6 +75,8 @@
         cls.vpnservices = []
         cls.ikepolicies = []
         cls.floating_ips = []
+        cls.metering_labels = []
+        cls.metering_label_rules = []
 
     @classmethod
     def tearDownClass(cls):
@@ -107,6 +109,13 @@
         # Clean up pools
         for pool in cls.pools:
             cls.client.delete_pool(pool['id'])
+        # Clean up metering label rules
+        for metering_label_rule in cls.metering_label_rules:
+            cls.admin_client.delete_metering_label_rule(
+                metering_label_rule['id'])
+        # Clean up metering labels
+        for metering_label in cls.metering_labels:
+            cls.admin_client.delete_metering_label(metering_label['id'])
         # Clean up ports
         for port in cls.ports:
             cls.client.delete_port(port['id'])
@@ -287,3 +296,24 @@
         else:
             cls.os_adm = clients.ComputeAdminManager(interface=cls._interface)
         cls.admin_client = cls.os_adm.network_client
+
+    @classmethod
+    def create_metering_label(cls, name, description):
+        """Wrapper utility that returns a test metering label."""
+        resp, body = cls.admin_client.create_metering_label(
+            description=description,
+            name=data_utils.rand_name("metering-label"))
+        metering_label = body['metering_label']
+        cls.metering_labels.append(metering_label)
+        return metering_label
+
+    @classmethod
+    def create_metering_label_rule(cls, remote_ip_prefix, direction,
+                                   metering_label_id):
+        """Wrapper utility that returns a test metering label rule."""
+        resp, body = cls.admin_client.create_metering_label_rule(
+            remote_ip_prefix=remote_ip_prefix, direction=direction,
+            metering_label_id=metering_label_id)
+        metering_label_rule = body['metering_label_rule']
+        cls.metering_label_rules.append(metering_label_rule)
+        return metering_label_rule
diff --git a/tempest/api/network/test_metering_extensions.py b/tempest/api/network/test_metering_extensions.py
new file mode 100644
index 0000000..08ccbfe
--- /dev/null
+++ b/tempest/api/network/test_metering_extensions.py
@@ -0,0 +1,159 @@
+# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
+#
+# Author: Emilien Macchi <emilien.macchi@enovance.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from tempest.api.network import base
+from tempest.common.utils import data_utils
+from tempest.openstack.common import log as logging
+from tempest import test
+
+
+LOG = logging.getLogger(__name__)
+
+
+class MeteringJSON(base.BaseAdminNetworkTest):
+    _interface = 'json'
+
+    """
+    Tests the following operations in the Neutron API using the REST client for
+    Neutron:
+
+        List, Show, Create, Delete Metering labels
+        List, Show, Create, Delete Metering labels rules
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        super(MeteringJSON, cls).setUpClass()
+        if not test.is_extension_enabled('metering', 'network'):
+            msg = "metering extension not enabled."
+            raise cls.skipException(msg)
+        description = "metering label created by tempest"
+        name = data_utils.rand_name("metering-label")
+        try:
+            cls.metering_label = cls.create_metering_label(name, description)
+            remote_ip_prefix = "10.0.0.0/24"
+            direction = "ingress"
+            cls.metering_label_rule = cls.create_metering_label_rule(
+                remote_ip_prefix, direction,
+                metering_label_id=cls.metering_label['id'])
+        except Exception:
+            LOG.exception('setUpClass failed')
+            cls.tearDownClass()
+            raise
+
+    def _delete_metering_label(self, metering_label_id):
+        # Deletes a label and verifies if it is deleted or not
+        resp, body = self.admin_client.delete_metering_label(metering_label_id)
+        self.assertEqual(204, resp.status)
+        # Asserting that the label is not found in list after deletion
+        resp, labels = (self.admin_client.list_metering_labels(
+                        id=metering_label_id))
+        self.assertEqual(len(labels['metering_labels']), 0)
+
+    def _delete_metering_label_rule(self, metering_label_rule_id):
+        # Deletes a rule and verifies if it is deleted or not
+        resp, body = (self.admin_client.delete_metering_label_rule(
+                      metering_label_rule_id))
+        self.assertEqual(204, resp.status)
+        # Asserting that the rule is not found in list after deletion
+        resp, rules = (self.admin_client.list_metering_label_rules(
+                       id=metering_label_rule_id))
+        self.assertEqual(len(rules['metering_label_rules']), 0)
+
+    @test.attr(type='smoke')
+    def test_list_metering_labels(self):
+        # Verify label filtering
+        resp, body = self.admin_client.list_metering_labels(id=33)
+        self.assertEqual('200', resp['status'])
+        metering_labels = body['metering_labels']
+        self.assertEqual(0, len(metering_labels))
+
+    @test.attr(type='smoke')
+    def test_create_delete_metering_label_with_filters(self):
+        # Creates a label
+        name = data_utils.rand_name('metering-label-')
+        description = "label created by tempest"
+        resp, body = (self.admin_client.create_metering_label(name=name,
+                      description=description))
+        self.assertEqual('201', resp['status'])
+        metering_label = body['metering_label']
+        self.addCleanup(self._delete_metering_label,
+                        metering_label['id'])
+        # Assert whether created labels are found in labels list or fail
+        # if created labels are not found in labels list
+        resp, labels = (self.admin_client.list_metering_labels(
+                        id=metering_label['id']))
+        self.assertEqual(len(labels['metering_labels']), 1)
+
+    @test.attr(type='smoke')
+    def test_show_metering_label(self):
+        # Verifies the details of a label
+        resp, body = (self.admin_client.show_metering_label(
+                      self.metering_label['id']))
+        self.assertEqual('200', resp['status'])
+        metering_label = body['metering_label']
+        self.assertEqual(self.metering_label['id'], metering_label['id'])
+        self.assertEqual(self.metering_label['tenant_id'],
+                         metering_label['tenant_id'])
+        self.assertEqual(self.metering_label['name'], metering_label['name'])
+        self.assertEqual(self.metering_label['description'],
+                         metering_label['description'])
+
+    @test.attr(type='smoke')
+    def test_list_metering_label_rules(self):
+        # Verify rule filtering
+        resp, body = self.admin_client.list_metering_label_rules(id=33)
+        self.assertEqual('200', resp['status'])
+        metering_label_rules = body['metering_label_rules']
+        self.assertEqual(0, len(metering_label_rules))
+
+    @test.attr(type='smoke')
+    def test_create_delete_metering_label_rule_with_filters(self):
+        # Creates a rule
+        resp, body = (self.admin_client.create_metering_label_rule(
+                      remote_ip_prefix="10.0.1.0/24",
+                      direction="ingress",
+                      metering_label_id=self.metering_label['id']))
+        self.assertEqual('201', resp['status'])
+        metering_label_rule = body['metering_label_rule']
+        self.addCleanup(self._delete_metering_label_rule,
+                        metering_label_rule['id'])
+        # Assert whether created rules are found in rules list or fail
+        # if created rules are not found in rules list
+        resp, rules = (self.admin_client.list_metering_label_rules(
+                       id=metering_label_rule['id']))
+        self.assertEqual(len(rules['metering_label_rules']), 1)
+
+    @test.attr(type='smoke')
+    def test_show_metering_label_rule(self):
+        # Verifies the details of a rule
+        resp, body = (self.admin_client.show_metering_label_rule(
+                      self.metering_label_rule['id']))
+        self.assertEqual('200', resp['status'])
+        metering_label_rule = body['metering_label_rule']
+        self.assertEqual(self.metering_label_rule['id'],
+                         metering_label_rule['id'])
+        self.assertEqual(self.metering_label_rule['remote_ip_prefix'],
+                         metering_label_rule['remote_ip_prefix'])
+        self.assertEqual(self.metering_label_rule['direction'],
+                         metering_label_rule['direction'])
+        self.assertEqual(self.metering_label_rule['metering_label_id'],
+                         metering_label_rule['metering_label_id'])
+        self.assertFalse(metering_label_rule['excluded'])
+
+
+class MeteringXML(MeteringJSON):
+    interface = 'xml'
diff --git a/tempest/services/network/network_client_base.py b/tempest/services/network/network_client_base.py
index 96b9b1d..51c10e9 100644
--- a/tempest/services/network/network_client_base.py
+++ b/tempest/services/network/network_client_base.py
@@ -27,7 +27,9 @@
     'health_monitors': 'lb',
     'members': 'lb',
     'vpnservices': 'vpn',
-    'ikepolicies': 'vpn'
+    'ikepolicies': 'vpn',
+    'metering_labels': 'metering',
+    'metering_label_rules': 'metering'
 }
 
 # The following list represents resource names that do not require